What do you think of attack baptism?

Back story: A student in my grade (I am currently a sophomore in high school) came in to my study hall. At the time I was walking to the front of the room to get something. He took his water bottle, poured water into his hand, and threw it into my face, saying "I now baptize you in the name of the Father, the Mother, and the Holy Spirit." He is a Catholic zealot, for lack of better word, and is usually fairly intelligent. This action was offending at first, but now I just have to laugh at the complete stupidity of it. What do you, forum, think of this?